My a/c appears to be dying.
When the thermostat turns on, the system does not always crank up
immediately - sometimes not at all..
Last night it was dead so I left the breakers off overnight and when I
went to turn them on this morning the system worked fine and brought
the temperature down to the thermostat setting. Then once it turned
off and the temperature started to rise it would not turn on again.
I replaced the thermostat batteries, and even replaced the thermostat
Perhaps the capacitor is going bad...what do you think?
The inside unit is 3 years old and the outside unit is somewhat older.
Right now we are strapped for cash to get a pro come and take a look so
I am hoping I could do something myself.
Any ideas ?- could it be the capacitor ?....how can I test it.? I
have a multimeter and some electronics knowledge.
Extremely interesting yet always the same. The A/C doesnt work so you
replace the batteries.........then the stat?
That doesnt work so you pick on the capacitor?
Im thinking your refrigerant is worn out and needs to be replenished.
If that doesnt work, replace the stat again.
You probably just got a bad one.
It could be low on gas. Have tried applying the choke before cranking it up?
Maybe the battery is bad. Down there in Miami, they only last about three
There you go.... It's the battery.
No cash, so, you went out and bought a thermostat? Wait.... It probably is
the thermostat. When you put the new thermostat in, did you get one that
runs the same protocol? You know, Goodman runs I2C, Lennox runs SPI,
Carrier, and Trane run MODBUS.
I have lot's of ideas. If you think it's the capacitor, go on out and buy
one. I know.... The parts store won't take it back when you find out it's
not that like Lowes, or the Depot took the stat back. There's alot of things
it might be. If you don't F the unit up too bad, one of the items on the
long list of what "could" be bad might even still be under warranty.
Remember that while you're playing.
I have electronics knowledge, but I don't work on my own TV.... or my own
computer. I know when to call a pro. I guess thats beyond your
comprehension. The cost of the service call will probably be about the same
as what you paid for the t-stat, batteries, the trip to the big box store,
your time, etc.
There's a wide assortment of things that can go wrong go wrong go
wrong. Time to call a service tech. There are some troubleshooting web
sites, but it sounds like you need an experinced service guy. Or gal.
I've found that poorly serviced AC systems use a lot more electric.
So, a good service (including wet cleaning the outdoor unit) may save
it's own cost in electric savings.
Christopher A. Young
You can\'t shout down a troll.
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